A　groove-shaped　array　with　average　25　mu　m　interval,　25　mu　m　wall　thickness,　75　mu　m　depth　and　a　columnar　array　with　average　30　mu　m　side　length,　25　mu　m　interval,　43　mu　m　depth　are　processed　by　1064　nm　picosecond　laser　on　Polytetrafluoroethylene　(PTFE)　surface　at　room　temperature.　The　water　contact　angle　of　modified　PTFE　surface　can　reach　167　degrees,　which　show　super　hydrophobic　surface　of　PTFE　is　prepared.　It　is　observed　super　hydrophobic　surface　reflects　metal　luster　underwater　through　the　glassware　when　super　hydrophobic　PTFE　entirely　immerses　in　pure　water.　The　experiment　conducts　super　hydrophobic　surface　will　enhance　intensity　of　reflection　of　visible　light　underwater,　which　is　due　to　total　internal　reflection　of　super　hydrophobic　surface　underwater.